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Bench Test Results: Eizfan 40A 4800mAh 21700…irresponsibly overrated, just a Samsung 48G, DO NOT BUY

Discussion in 'Batteries and Chargers' started by Mooch, Nov 19, 2017.

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  1. Mooch

    Mooch Electron Wrangler Verified Member ECF Veteran

    Supporting member
    May 13, 2015
    While the test results are hard data, the conclusions and recommendations I make based on these tests are only my personal opinion based on my criteria for setting a rating. Carefully research any cell you are considering using before purchasing.

    Testing cells at their limits is dangerous and should never, ever, be attempted by anyone who has not thoroughly studied the dangers involved and how to minimize them.

    If the cell has only one current rating number on it, or if it only says "max" then I have to assume that the company is stating that the cell can be discharged at that current level in any way, including continuously.

    Cell photos: https://imgur . com/a/Mz71Z
    (Sorry for the split link but direct links to Imgur do not display properly)

    Bottom Line
    This Eizfan cell is identical in appearance in performance to the 10A Samsung 48G.

    Yi Fang Technology Co., you have lost your minds rating this cell at 40A. Vapers and vendors, there is no reason to support a company that has this little respect for our community or concern for our safety. Do not buy this cell.

    I am rating this Eizfan at 10A and 4800mAh.

    Two cells were purchased by me for the purposes of testing.

    Continuous-Current Test Results
    Eizfan 40A 4800mAh 21700 CC Tests.jpg

    Pulse-Current Test Results
    No pulse testing was done as this is a Samsung 48G rewrap.

    • Informative Informative x 5
    • Like Like x 1
  2. Wraith504

    Wraith504 Ultra Member Verified Member ECF Veteran

    Aug 25, 2014
    New Orleans, LA
    Thanks again as always!
    • Like Like x 2
    • Agree Agree x 1
  3. sonicbomb

    sonicbomb Vaping Master Verified Member ECF Veteran

    Feb 17, 2015
    1187 Hundertwasser
    I'm hoping there is a special place in the one of the eighteen Chinese hells for scumbag re-wrappers like Yi Fang.
    • Agree Agree x 1
  4. stols001

    stols001 Mistress of the Dark Nicotinic Arts Verified Member ECF Veteran

    Supporting member
    May 30, 2017
    Thank you Mooch, man these rewrappers are getting bold. But, thanks for all you do for battery safety :)

    • Like Like x 1
    • Agree Agree x 1
  5. Barkuti

    Barkuti Super Member ECF Veteran

    Definitively looks like certain cell rewrappers do not really know much about their products' actual performance, and probably neither they do seem to care.
    To me the bottom line is do not blindly believe in wrap figures. Nothing really wrong with this approach, I think I may have heard something similar in some (translated) Pawn Stars TV show. :)
    Don't forget to be respectfully loving with these lads when pointing out the facts to them, dear Mooch. Whether they do something or not is up to them, but the chances for the errors to be fixed are higher when the facts are presented in a respectful way. The chinese market seems to be full of mendacious practices, they seem to like to lie and be lied. :closedeyes:

    Cheers people :D
    • Like Like x 3
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